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Basic Addition Lesson 10: Number 10

Here's an easy example:

10
+
1
=
11
 
                    
+
  
=
                      
 
   DarkGreen Box   Brown Box   Teal Box   DodgerBlue Box   Blue Box   Gold Box   Plum Box   SandyBrown Box   Aquamarine Box   DarkBlue Box  plus     MediumPurple Box  equals     DarkGreen Box   Brown Box   Teal Box   DodgerBlue Box   Blue Box   Gold Box   Plum Box   SandyBrown Box   Aquamarine Box   DarkBlue Box   MediumPurple Box

We start with ten boxes, add one box, and now have eleven boxes.


Here's another example:

10
+
2
=
12
 
                    
+
    
=
                        
 
   Cyan Box   MediumVioletRed Box   LawnGreen Box   RoyalBlue Box   Purple Box   Wheat Box   GreenYellow Box   DarkOliveGreen Box   ForestGreen Box   Sienna Box  plus     DarkOrchid Box   CadetBlue Box  equals     Cyan Box   MediumVioletRed Box   LawnGreen Box   RoyalBlue Box   Purple Box   Wheat Box   GreenYellow Box   DarkOliveGreen Box   ForestGreen Box   Sienna Box   DarkOrchid Box   CadetBlue Box

We start with ten boxes, add two boxes, and now have twelve boxes.


Try this problem.

10
+
3
=
 
                    
+
      
=
                          
 
   PowderBlue Box   DarkCyan Box   Thistle Box   DarkSeaGreen Box   SeaGreen Box   OliveDrab Box   DarkKhaki Box   SpringGreen Box   Maroon Box   Navy Box  plus     DarkGreen Box   Brown Box   Teal Box  equals     PowderBlue Box   DarkCyan Box   Thistle Box   DarkSeaGreen Box   SeaGreen Box   OliveDrab Box   DarkKhaki Box   SpringGreen Box   Maroon Box   Navy Box   DarkGreen Box   Brown Box   Teal Box

We start with ten boxes, add three boxes, and now have thirteen boxes.


In order to do basic addition, you must memorize some equations but fear not: FoxyMath will help you! When you are finished with this lesson, you will know the following equations:

10 + 1 = 11
10 + 2 = 12
10 + 3 = 13
10 + 4 = 14
10 + 5 = 15
10+ 6 = 16
10 + 7 = 17
10 + 8 = 18
10 + 9 = 19
10 + 10 = 20
10 + 11 = 21
10 + 12 = 22


The following exercise will help you learn the above equations and what they mean. Please take your time: take whatever time you need to learn the material.

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